1. Clean brushes keep your home robot at best performance.2. The side brushes are easily removed and replaced as part of normal maintenance.3. Filters maintain the cleaning efficiency of the robot while reducing the ingress of dust, pollen and other allergens to the air you breathe.4. For best results, filters should be replaced every 2 to 3 months.5.For Xiaomi Mijia 1/1s Roborock S50 S51 S5 Max S55 S6 MaxV S5 T5 T6 E25 E35Colour:As shownMaterial:plasticPackage Contents:1 x roller brush1 x roller cover2 x filters2 x side brushesOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.